Frequencies for first 10,000 rows of rf_cesarn variable in natlterr2009 dataset :

  Number of |
   Previous |
   Cesarean |
 Deliveries |
        RFP |
594=f_rf_nc |
     esar R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,054       60.54       60.54
          1 |      1,184       11.84       72.38
          2 |        278        2.78       75.16
          3 |         30        0.30       75.46
          4 |          3        0.03       75.49
         99 |          2        0.02       75.51
          . |      2,449       24.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015